71506-33-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71506-33-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,5,0 and 6 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 71506-33:
(7*7)+(6*1)+(5*5)+(4*0)+(3*6)+(2*3)+(1*3)=107
107 % 10 = 7
So 71506-33-7 is a valid CAS Registry Number.